JPG corruption?

Pawnless Endgame · 25 Jun 2015 at 22:03

Apart from a failing hard drive, do you guys know what causes occasional image corruption? It mainly affects JPGs, where the lower half of the image is replaced by a repeating pattern, as pictured below. I've had a few very rare cases of PNGs going pop as well where it will just fail to open.

It doesn't affect any other file types e.g. MP3s. This is across 7 PCs that I've had from 1999 to the present.

lsg1r · 26 Jun 2015 at 01:46

yeah I've had similar a few times, usually it's because a few bytes of the file is missing for some reason during transfer.

Rroff · 26 Jun 2015 at 01:56

Can sometimes be caused due to system RAM only being 99% stable instead of 100% or just random failure of the disc.

Pawnless Endgame · 26 Jun 2015 at 21:33

Cheers guys. Seems to be quite common then. Usually I can get the good copy from a backup, unless I've already backed up a corrupted image unawares...!!

ED209 · 26 Jun 2015 at 21:53

what are you taking the images with?

I had a issue with images being cut off and it was down to the SD card being faulty and the images being stored on certain parts of the SD card

might be worth considering that if your using a digital camera with a removable SD card

yashiro · 30 Jun 2015 at 01:39

AMD CPU's did at some point have a legit hardware bug that was exposed by jpegs.

Also there was a bug with AMD's video drivers if jpegs were viewed using windows photo viewer.

Going to C:\Program Files\Common Files\ATI Technologies\Multimedia and renaming the DLLs amf-wic-jpeg-decoder64.dll and amf-wic-jpeg-decoder32.dll does work as a temporal solution for now, but I hope AMD will fix their decoders soon.

If 'backup' versions of the jpegs are fine then something is corrupting your data.